We introduce
QuiverTools, a new software package, available in both a SageMath
and Julia version, to study quivers and their moduli spaces of representations. Its key
features are the computation of general subdimension vectors, leading to canonical
decompositions, and checking the existence of (semi)stable representations, as well as
the enumeration of Harder–Narasimhan types and related calculations for Teleman
quantization. Computations related to intersection theory on quiver moduli are also
implemented.